FRP抗剪加固RC梁的应力不均匀分布系数研究

李伟文; 杨泳; 彭伟; 宋徽

doi:10.13409/j.cnki.jdpme.2016.01.019

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FRP抗剪加固RC梁的应力不均匀分布系数研究

滨海土木工程结构性能劣化与灾变控制 | 更新时间：2025-12-11

- FRP抗剪加固RC梁的应力不均匀分布系数研究
- Reserch on Non-uniform Coefficients of FRP Stress in FRP Shear Strengthened RC Beam
- 防灾减灾工程学报 2016年36卷第1期页码：138-145
- 作者机构：
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目（51278305）;国家“973”计划项目（2011CB013064）资助
- DOI：10.13409/j.cnki.jdpme.2016.01.019
  中图分类号： U375.1
- 纸质出版：2016
- 稿件说明：
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[1]李伟文,杨泳,彭伟,宋徽.FRP抗剪加固RC梁的应力不均匀分布系数研究[J].防灾减灾工程学报,2016,36(01):138-145.

李伟文, 杨泳, 彭伟, et al. Reserch on Non-uniform Coefficients of FRP Stress in FRP Shear Strengthened RC Beam[J]. 2016, 36(1): 138-145.
[1]李伟文,杨泳,彭伟,宋徽.FRP抗剪加固RC梁的应力不均匀分布系数研究[J].防灾减灾工程学报,2016,36(01):138-145. DOI： 10.13409/j.cnki.jdpme.2016.01.019.

李伟文, 杨泳, 彭伟, et al. Reserch on Non-uniform Coefficients of FRP Stress in FRP Shear Strengthened RC Beam[J]. 2016, 36(1): 138-145. DOI： 10.13409/j.cnki.jdpme.2016.01.019.

摘要

研究使用外贴纤维增强复合材料（FRP）以U型包裹无锚固方式对钢筋混凝土梁进行抗剪加固情况下的FRP应力不均匀分布系数Dfrp表达式。结合已有研究

提出一个新的Dfrp表达式

并将该表达式与现有的FRP-混凝土界面粘结应力模型相结合以得出若干个不同的FRP抗剪贡献值计算模型。此外

从近年相关研究的文献中

建立了一个U型无锚固FRP抗剪加固钢筋混凝土梁的实验数据库

通过将上述模型对数据库中实验试件抗剪贡献的预测值与数据库中相应的实验值进行对比

分析各个模型的优劣

最终得出一个最优的、简便安全且适用于工程实践的FRP抗剪承载力贡献模型。

Abstract

This paper concentrates on researching the formula about non-uniform coefficient Dfrpof FRP stress externally bonded to the surface of concrete beam with U-wrapping configuration and without anchoring.Based on the previous work

this paper suggests a new expression of Dfrp

and combines this expression with existing bond stress model of FRP-concrete interface

then gets several different calculation models of FRP shear capacity contribution Vf.Besides

the authors summrize the officially published professional literatures in past 20 years and set up a database concerning using FRP to strengthen the reinforced concrete beam in shear with U-wrapping configuration without anchoring.Comparing the predicted value of Vffrom above calculation models with the exprimental value from database

whereafter analysing the advantages and the drawbacks of all calculation models

finally we get an optimal

convenient and safe model

which is suitable for engineering practice.

关键词

Keywords

references

数字图像相关法测量FRP片材与混凝土界面的黏结滑移关系 [J]. 施嘉伟,朱虹,吴智深,戴宜全,何小元,吴刚. 土木工程学报 . 2012(10)

CFRP加固高强钢筋混凝土梁抗剪承载力计算 [J]. 周英武,王苏岩,李宏男. 大连理工大学学报 . 2009(02)

复杂应力状态对混凝土梁外贴FRP条带抗剪贡献的影响 [J]. 曲哲,叶列平,陈建飞,陆新征. 工程力学 . 2008(08)

碳纤维布加固混凝土梁受剪承载力的计算方法研究 [J]. 高丹盈,钱伟,赵军. 水力发电学报 . 2007(06)

混凝土梁外贴FRP抗剪加固承载力计算 [J]. 陆新征,叶列平,陈建飞,李天虹. 建筑结构 . 2006(09)

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Quantification of Bond-Slip Relationship for Externally Bonded FRP-to-Concrete Joints [J] . Yu-Fei Wu,Cheng Jiang. Journal of Composites for Construction . 2013 (5)

Analytical solution for the bond strength of externally bonded reinforcement [J] . Yu-Fei Wu,Xin-Sheng Xu,Jia-Bin Sun,Cheng Jiang. Composite Structures . 2012 (11)

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Analytical modeling of the bond–slip relationship at FRP-concrete interfaces for adhesively-bonded joints [J] . Ying-Wu Zhou,Yu-Fei Wu,Yanchun Yun. Composites Part B . 2010 (6)

Width effect in the interface fracture during shear debonding of FRP sheets from concrete [J] . Kolluru V. Subramaniam,Christian Carloni,Lucio Nobile. Engineering Fracture Mechanics . 2006 (4)

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Simplified Shear Design Method for Concrete Beams Strengthened with Fiber Reinforced Polymer Sheets [J] . Christophe Deniaud,J. J. Roger Cheng. Journal of Composites for Construction . 2004 (5)

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